'use strict'

class content {

  constructor () {
    //param默认就是/:id，若要改变路由，则可以设置此属性，比如设置为/:name
    //this.param = '/:id'
  }

  //以下方法，若不需要，要去掉，避免无意义的路由。

  //获取资源具体内容
  //对应路由 GET /content/:id
  async get (c) {
    let sqltext = `SELECT * FROM content WHERE id=$1`

    let r = await c.service.psql.query(sqltext, [c.param.id])
  
    if (r.rowCount === 0) {
      return c.status(404).send('content not found')
    }
  
    c.send(r.rows[0])
  }

  //创建资源
  //对应路由 POST /content
  async post (c) {
    try {
      //提交的Body数据通过c.body获取
      let data = JSON.parse(c.body)
  
      let sqltext = `INSERT INTO `
        + ` content(id, add_time, detail, title, update_time) `
        + ` VALUES ($1, $2, $3, $4, $5)`
  
      //生成唯一ID
      let id = c.helper.makeId()
      let tm = Date.now()
  
      let r = await c.service.psql.query(sqltext, [
        id, tm, data.detail, data.title, tm
      ])
  
      if (r.rowCount === 0) {
        return c.status(500).send('failed')
      }
  
      c.send(id)
  
    } catch (err) {
      c.status(400).send('it is not json data')
    }
  }

  //更新资源
  //对应路由 PUT /content/:id
  /* async put (c) {

  } */

  //获取列表
  //对应路由 GET /content
  async list (c) {
    let ret = await c.service.psql.query(`select * from content`)
    //等效于 c.res.body = ret.rows
    c.send(ret.rows)
  }

  //删除资源
  //对应路由 DELET /content/:id
  async delete (c) {
    let r = await c.service.psql.query(`DELETE FROM content WHERE id=$1`, [ c.param.id ])

    c.send({
      count: r.rowCount
    })  
  }
  __mid(){
    return[
      {
        name:'token-verify',
        path:['post','delete']
      }
    ]
  }

}

module.exports = content